JP6482060B2 - Movable bracket for train tracks - Google Patents

Movable bracket for train tracks Download PDF

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JP6482060B2
JP6482060B2 JP2014234209A JP2014234209A JP6482060B2 JP 6482060 B2 JP6482060 B2 JP 6482060B2 JP 2014234209 A JP2014234209 A JP 2014234209A JP 2014234209 A JP2014234209 A JP 2014234209A JP 6482060 B2 JP6482060 B2 JP 6482060B2
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main pipe
horizontal main
movable bracket
horizontal
fragile portion
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JP2016097726A (en
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秀夫 大森
秀夫 大森
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Sanwa Tekki Corp
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Sanwa Tekki Corp
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Description

本発明は、線路脇の支持構造物にトロリ線等の電車線を支持するブラケットに関し、特に温度変化による電車線の延線方向の移動に対応できるように、支持点を中心に水平旋回可能に構成された可動ブラケットに係るものである。   The present invention relates to a bracket for supporting a train line such as a trolley line on a support structure beside the track, and in particular, it can be turned horizontally around a support point so that it can cope with the movement in the extending direction of the train line due to temperature change. This relates to the movable bracket configured.

従来、電車線路用可動ブラケットとして、特許文献１に記載されたものが知られている。この可動ブラケットは、線路脇に設置された支持構造物から水平碍子を介して線路上方に向かって水平に延びる金属製の水平主パイプと、この水平主パイプの下方において支持構造物から斜碍子を介して水平主パイプの先端側に向かって斜め上方に延び先端において水平主パイプに結合される金属製の斜主パイプと、この斜主パイプと水平主パイプと連結する金属製の振れ止めパイプとを具備する。水平主パイプの斜主パイプとの結合部より先端側に、トロリ線支持部材であるアーム支持金具が結合され、また上部に吊架線が支持される。   Conventionally, what was described in patent document 1 is known as a movable bracket for train tracks. The movable bracket includes a horizontal main pipe made of metal that extends horizontally from a support structure installed beside the track through a horizontal insulator toward the upper side of the track, and a tilt insulator from the support structure below the horizontal main pipe. A metal oblique main pipe extending obliquely upward toward the distal end side of the horizontal main pipe via the tip and coupled to the horizontal main pipe at the distal end; and a metal steady stop pipe coupled to the oblique main pipe and the horizontal main pipe; It comprises. An arm support fitting as a trolley wire support member is connected to the tip side of the connecting portion of the horizontal main pipe with the oblique main pipe, and a suspension line is supported on the upper part.

特開２００３−２７６４７９号公報JP 2003-276479 A

上記従来の可動ブラケットにおいては、トロリ線、吊架線等の電車線の重量が加わると、水平主パイプを下方に変形させる曲げ応力がかかる。この水平主パイプの変形を抑制するために、水平主パイプと斜主パイプの間に振止パイプが取り付けられている。水平主パイプに曲げ応力がかかると、振止パイプにより、斜主パイプを変形させる応力が働き、その結果、斜主パイプの支持点側の碍子に曲げ応力が加わる。地震時には、この曲げ応力が過大になり、相対的に曲げ、捻れの耐荷重が低い碍子が損傷を受けるおそれがある。可動ブラケット本体は、損傷を受けても代替部材の入手が比較的容易であるため、復旧が比較的容易である。しかしながら、碍子が破壊された場合、代用になるものがないために復旧が困難である。
したがって、本発明は、碍子に伝わる地震時の衝撃荷重を低減させ、碍子を破壊から守ることができる可動ブラケットを提供することを目的としている。 In the conventional movable bracket described above, when the weight of a train line such as a trolley line or a suspension line is applied, a bending stress that deforms the horizontal main pipe downward is applied. In order to suppress the deformation of the horizontal main pipe, a bracing pipe is attached between the horizontal main pipe and the oblique main pipe. When a bending stress is applied to the horizontal main pipe, a stress that deforms the oblique main pipe acts by the anti-rest pipe, and as a result, a bending stress is applied to the insulator on the support point side of the oblique main pipe. At the time of an earthquake, this bending stress becomes excessive, and there is a risk that the insulator having a relatively low bending and twisting load capacity may be damaged. Even if the movable bracket body is damaged, the replacement member is relatively easy to obtain, so that the recovery is relatively easy. However, when the insulator is destroyed, there is no substitute for it, and recovery is difficult.
Accordingly, an object of the present invention is to provide a movable bracket that can reduce an impact load during an earthquake transmitted to an insulator and protect the insulator from destruction.

以下、添付図面の符号を参照して説明するが、本発明はこれに限定されるものではない。
上記課題を解決するための、本発明の可動ブラケット１は、水平主パイプ３における斜主パイプ５との結合部６とトロリ線支持部材７との結合部１１との間に、下方への曲げ耐荷重が他の部位よりも低い脆弱部１２が形成される。この脆弱部１２の曲げ耐荷重は、水平主パイプ３の先端側にかかる下方への荷重に伴う斜碍子４への曲げ荷重が斜碍子４の耐荷重を越える前に相対的脆弱部１２が変形する値に設定される。 Hereinafter, the present invention will be described with reference to the accompanying drawings, but the present invention is not limited thereto.
In order to solve the above problems, the movable bracket 1 of the present invention is bent downward between the connecting portion 6 of the horizontal main pipe 3 with the oblique main pipe 5 and the connecting portion 11 of the trolley wire support member 7. The fragile portion 12 having a lower load resistance than other portions is formed. The bending load resistance of the fragile portion 12 is such that the relative fragile portion 12 is deformed before the bending load applied to the slope 4 due to the downward load applied to the distal end side of the horizontal main pipe 3 exceeds the load resistance of the slope 4. Is set to the value to be

本発明の可動ブラケットにおいては、地震等による下方への過大な衝撃荷重が水平主パイプ３にかかったときに、水平主パイプ３の脆弱部１２を変形させることにより、碍子４に伝わる衝撃荷重を低減させ、碍子４を破壊から守ることができる。   In the movable bracket of the present invention, when an excessive impact load downward due to an earthquake or the like is applied to the horizontal main pipe 3, the fragile portion 12 of the horizontal main pipe 3 is deformed, so that the impact load transmitted to the insulator 4 is reduced. It can reduce and can protect the insulator 4 from destruction.

本発明に係る可動ブラケットの正面図である。It is a front view of the movable bracket which concerns on this invention. 図１の可動ブラケットの一部の正面図である。It is a front view of a part of the movable bracket of FIG. 図１におけるＩＩＩ−ＩＩＩ断面図である。It is III-III sectional drawing in FIG. 他の実施形態の可動ブラケットの一部の正面図である。It is a partial front view of the movable bracket of other embodiment. 他の実施形態の可動ブラケットの一部の正面図である。It is a partial front view of the movable bracket of other embodiment. 他の実施形態の可動ブラケットの一部の正面図である。It is a partial front view of the movable bracket of other embodiment.

図面を参照して本発明の実施の形態を説明する。
図１において、可動ブラケット１は、水平碍子２、水平主パイプ３、斜碍子４、斜主パイプ５を具備する。水平主パイプ３、斜主パイプ５は、いずれも鋼管である。 Embodiments of the present invention will be described with reference to the drawings.
In FIG. 1, the movable bracket 1 includes a horizontal insulator 2, a horizontal main pipe 3, a diagonal insulator 4, and an oblique main pipe 5. The horizontal main pipe 3 and the oblique main pipe 5 are both steel pipes.

水平主パイプ３は、線路脇に設置された支柱Ｐのような支持構造物から水平碍子２を介して線路上方に向かって水平に延びる。   The horizontal main pipe 3 extends horizontally from the support structure such as the support P installed on the side of the track toward the upper side of the track via the horizontal insulator 2.

斜主パイプ５は、水平主パイプ３の下方において、支持構造物から斜碍子４を介して水平主パイプ３の先端側に向かって斜上方に延び、先端において水平主パイプ３に結合される。斜主パイプ５の中間部と水平主パイプ３の中間部との間には、斜主パイプ５と反対側へ傾斜する一対のステンレス鋼製の補強プレート１９が結合される。   The oblique main pipe 5 extends obliquely upward from the support structure toward the distal end side of the horizontal main pipe 3 via the oblique insulator 4 below the horizontal main pipe 3, and is coupled to the horizontal main pipe 3 at the distal end. A pair of stainless steel reinforcing plates 19 that are inclined to the opposite side of the oblique main pipe 5 are coupled between the intermediate portion of the oblique main pipe 5 and the intermediate portion of the horizontal main pipe 3.

水平主パイプ３の斜主パイプ５との結合部６より先端側に、トロリ線支持部材７を構成するアーム支持金具８と、吊架線支持金具９が結合される。   An arm support fitting 8 and a suspension wire support fitting 9 constituting the trolley wire support member 7 are joined to the front end side of the joint portion 6 of the horizontal main pipe 3 with the oblique main pipe 5.

図示の実施形態において、トロリ線支持部材７は、アーム支持金具８と、これに結合される曲線引き金具１０とを具備し、曲線引き金具１０の先端にトロリ線Ｔが把持される。吊架線支持金具９の上には、トロリ線Ｔを吊り下げる吊架線Ｍが支持される。   In the illustrated embodiment, the trolley wire support member 7 includes an arm support fitting 8 and a curved fitting 10 coupled thereto, and the trolley wire T is gripped at the tip of the curved fitting 10. On the hanging wire support bracket 9, a hanging wire M for hanging the trolley wire T is supported.

水平主パイプ３における斜主パイプ５との結合部６とアーム支持金具８との結合部１１との間に、脆弱部１２が形成される。この脆弱部１２は、下方への曲げ耐荷重が他の部位よりも低く設定される。すなわち、脆弱部１２の曲げ耐荷重は、地震等に起因する吊架線Ｍ、トロリ線Ｔの振動により水平主パイプ３の先端側にかかる下方への過大な荷重に伴う斜碍子４への曲げ荷重が、当該斜碍子４の耐荷重を越える前に脆弱部１２が変形する値に設定される。なお、水平主パイプ３は、通常の状態では電車線を支持するのに十分な強度がある。   A fragile portion 12 is formed between the joint portion 6 of the horizontal main pipe 3 and the oblique main pipe 5 and the joint portion 11 of the arm support fitting 8. This weak part 12 is set to have a lower bending load resistance lower than other parts. That is, the bending load resistance of the fragile portion 12 is the bending load applied to the tilt insulator 4 due to the excessive downward load applied to the distal end side of the horizontal main pipe 3 due to the vibration of the suspension wire M and the trolley wire T caused by an earthquake or the like. However, it is set to a value at which the fragile portion 12 is deformed before the load capacity of the tilting insulator 4 is exceeded. The horizontal main pipe 3 has sufficient strength to support the train line in a normal state.

図２において、脆弱部１２は、水平主パイプ５の外周に形成される環状溝１３によって構成される。   In FIG. 2, the fragile portion 12 is constituted by an annular groove 13 formed on the outer periphery of the horizontal main pipe 5.

図４に示す実施形態において、脆弱部１２は、水平主パイプ３の斜主パイプ５との結合部６より先端側に、内径を拡大することによって肉を薄くした部位１４を形成することによって構成される。   In the embodiment shown in FIG. 4, the fragile portion 12 is configured by forming a portion 14 whose thickness is reduced by enlarging the inner diameter on the tip side of the connecting portion 6 of the horizontal main pipe 3 with the oblique main pipe 5. Is done.

図５の実施形態において、水平主パイプ３は、基端側に配置される相対的に肉厚の管材１５と先端側に配置される相対的に肉薄の管材１６とを溶接して形成され、この溶接部１７より先端側が脆弱部１２を構成する。   In the embodiment of FIG. 5, the horizontal main pipe 3 is formed by welding a relatively thick pipe member 15 disposed on the proximal end side and a relatively thin pipe member 16 disposed on the distal end side, The front end side of the welded portion 17 constitutes the fragile portion 12.

図６の他の実施形態において、脆弱部１２は、脆弱部１２は、水平主パイプ５の下部に形成される貫通孔１８によって構成される。   In another embodiment of FIG. 6, the fragile portion 12 is constituted by a through hole 18 formed in the lower portion of the horizontal main pipe 5.

いずれの実施形態の可動ブラケット１においても、地震等によるトロリ線Ｔ、吊架線Ｍの振動に伴う下方への過大な衝撃荷重が水平主パイプ３にかかったときに、水平主パイプ３の脆弱部１２を変形させることにより、斜碍子４に伝わる衝撃荷重を低減させ、斜碍子４を破壊から守ることができる。   In any embodiment of the movable bracket 1, when the horizontal main pipe 3 is subjected to excessive downward impact load due to the vibration of the trolley line T and the suspension line M due to an earthquake or the like, the fragile portion of the horizontal main pipe 3. By deforming 12, it is possible to reduce the impact load transmitted to the tilt lever 4 and protect the tilt lever 4 from being destroyed.

１ 可動ブラケット
２ 水平碍子
３ 水平主パイプ
４ 斜碍子
５ 水平主パイプ
６ 結合部
７ トロリ線支持部材
８ アーム支持金具
９ 吊架線支持金具
１０ 曲線引き金具
１１ 結合部
１２ 脆弱部
１３ 環状溝
１４ 肉薄部位
１５ 肉厚の管材
１６ 肉薄の管材
１７ 溶接部
１８ 貫通孔
１９ 補強プレート
Ｍ 吊架線
Ｐ 支柱
Ｔ トロリ線 DESCRIPTION OF SYMBOLS 1 Movable bracket 2 Horizontal insulator 3 Horizontal main pipe 4 Slant insulator 5 Horizontal main pipe 6 Connection part 7 Trolley wire support member 8 Arm support metal fitting 9 Suspension wire support metal fitting 10 Curvature drawing metal fitting 11 Joint part 12 Fragile part 13 Annular groove 14 Thin part 15 Thick pipe 16 Thin pipe 17 Welded part 18 Through hole 19 Reinforcement plate M Suspension line P Post T Trolley line

Claims (6)

線路脇に設置された支持構造物から水平碍子を介して線路上方に向かって水平に延びる水平主パイプと、この水平主パイプの下方において前記支持構造物から斜碍子を介して水平主パイプの先端側に向かって斜め上方に延び先端において水平主パイプに結合される斜主パイプとを具備し、前記水平主パイプの前記斜主パイプとの結合部より先端側にトロリ線支持部材が結合される可動ブラケットにおいて、
前記水平主パイプにおける前記斜主パイプとの結合部とトロリ線支持部材との結合部との間に、下方への曲げ耐荷重が他の部位よりも低い脆弱部が形成され、
前記脆弱部の曲げ耐荷重は、前記水平主パイプの先端側にかかる下方への荷重に伴う前記斜碍子への曲げ荷重が耐荷重を越える前に相対的に強度の低い脆弱部が変形する値に設定されることを特徴とする電車線路用可動ブラケット。 A horizontal main pipe extending horizontally from above the support structure through a horizontal insulator from a support structure installed on the side of the track, and a tip of the horizontal main pipe from the support structure below the horizontal main pipe via a tilt insulator A slant main pipe extending obliquely upward toward the side and coupled to the horizontal main pipe at the tip, and a trolley wire support member is coupled to the tip side from the joint of the horizontal main pipe to the slant main pipe. In the movable bracket,
Between the joint portion of the horizontal main pipe and the oblique main pipe and the joint portion of the trolley wire support member, a fragile portion having a lower bending load resistance than other parts is formed,
Bending load bearing of the fragile portion, the value bending load to the swash insulator due to load downward according to the distal end side of the horizontal main pipe is relatively low fragile portion in strength is deformed before exceeding the load-bearing A movable bracket for train tracks, characterized by being set to. 前記脆弱部は、前記水平主パイプに形成される肉薄部によって構成されることを特徴とする請求項１に記載の電車線路用可動ブラケット。   The train bracket movable bracket according to claim 1, wherein the fragile portion is constituted by a thin portion formed in the horizontal main pipe. 前記脆弱部としての肉薄部は、前記水平主パイプの外周に形成される環状溝によって構成されることを特徴とする請求項２に記載の電車線路用可動ブラケット。   The movable bracket for a train line according to claim 2, wherein the thin portion as the fragile portion is configured by an annular groove formed on an outer periphery of the horizontal main pipe. 前記脆弱部としての肉薄部は、前記水平主パイプの前記斜主パイプとの結合部より先端側に内径を拡大した部位を形成することによって構成されることを特徴とする請求項２に記載の電車線路用可動ブラケット。   The thin portion as the fragile portion is configured by forming a portion having an enlarged inner diameter on the tip side from a joint portion of the horizontal main pipe with the oblique main pipe. Movable bracket for train tracks. 前記脆弱部は、前記水平主パイプの下部に形成される貫通孔によって構成されることを特徴とする請求項１に記載の電車線路用可動ブラケット。 The movable bracket for a train line according to claim 1, wherein the fragile portion is formed by a through hole formed in a lower portion of the horizontal main pipe. 前記水平主パイプは、基端側に配置される相対的に肉厚の管材と先端側に配置される相対的に肉薄の管材とを溶接して形成され、当該溶接部が前記脆弱部を構成することを特徴とする請求項１に記載の電車線路用可動ブラケット。   The horizontal main pipe is formed by welding a relatively thick tube disposed on the proximal end side and a relatively thin tube disposed on the distal end side, and the welded portion constitutes the fragile portion. The movable bracket for a train line according to claim 1, wherein
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